The front disc brakes are inherently self-adjusting. No adjustments are either necessary or possible.
The drum brakes are designed to self-adjust when applied with the car moving in reverse. However, they can also be adjusted manually. This manual adjustment should also be performed whenever the linings are replaced.
- Raise and safely support the vehicle with jackstands.
- Matchmark the relationship between the wheel to the axle flange to insure proper balance upon reassembly, then remove the tire and wheel assembly.
- Matchmark the relationship of the drum to the axle flange, then remove the brake drum.
- Make sure the stops on both parking brake levers are against the edges of the webs on the parking brake shoes. If the parking brake cable is holding the stops OFF the edge of the shoe webs, loosen the parking brake cable adjustment.
- Measure the drum inside diameter, using tool J 21177-A or equivalent tool.
- Turning the star wheel on the adjusting bolt/screw assembly, adjust the shoe and lining diameter to be 0.05 in. (1.27mm) less that the drum inside diameter at each wheel.
- Apply and release the brake pedal 30-35 times, with a one second pause between each brake application.
- Install the drums and wheels, aligning the previous marks.
- Carefully lower the vehicle.
- Tighten the wheel nuts to 100 ft. lbs. (136 Nm).
- Make several alternate forward and reserve stops applying firm force to the brake pedal until ample pedal reserve is built up.